The document focuses on finding the base when given percentages and rates, providing various examples and problems. It includes exercises where readers calculate bases, rates, and percentages related to different scenarios, such as classroom grades and distribution. Additionally, it encourages engagement through group activities and the creation of similar problems.

1. Finding the Base when the
Percentage and Rate are Given
Prepared by: Genelene B. Fernandez

2. Identify the base, percent and rate
1. 40% of 10 is 4.
2. 2 is 20% of 10.
3. 17 is 33 1/3% of 51.
4. 20% of 15 is 3.
5. 0.5% of 2000 is 10.

3. Find the rate of the following:
1. 3:4
2. 1/5
3. 8 ÷ 10
4. 2:8
5. 66/100
75%
20%
80%
25%
66%

4. When was the last time you got a
perfect score in a test?
How do you feel when you got that?
What should you do to get a perfect
score again?

5. In Teacher Gen’s class, 6 pupils
received A on the last Math test.
This is 20% of the number of
pupils are there in her class?

6. Solve for the base.
1. 50% of _____ is 3.
2. 20% of what number is 14.
3. 14 is 35% of N.
4. 10.5 is 30% of what
number?
5. 65% of N = 58.5
6
70
40
35
90

7. Relay
20%Nis10
15is75%ofN
875is87.5ofN
12.5is½%ofwhatnumber?
95is80%ofN 84.21
2500
1000
20
50

8. Group Activity
B R P
30% 60
20% 40
80% 25
Mathyaga –
Mathlinis
Mathinik – 20% of N is 2.
7 is 35% of N
40% of n = 8
Mathgaling – a) In a Grade outing, 240 pupils
participated if 80% joined the outing, how many
grade 6 pupil are there in the school?
b) In a math class, 8 pupils receive a grade of 90. If
16% of the class got 90, how many pupils are there in
a class?
Mathalino – Create a
problem involving finding
the base and write solution

9. How do you find the base
when the percentage and
rate are given?

10. Answer the following:
1. 6% of n =4.5
2. 12% of N is 14.4
3. 117 is 65% of N
4. 125% of N is 900
5. 220 is 275% of n

11. Solve.
1. Rhod gets 95% of the Math test
correctly which is 38. How many
items does the test have?
2. Rolly receives P135 from his sister
as a help which is 10% of the
money he gets from his mother.
How much does his mother give
him?

12. Thank you!